Windshield wiper



June l 24, 1930.

.1, J. McNTr-:VALDO WINDSHIELD WIPER Fileld June 2, 1926 f INVENTOR.

III-Ill I Patented 4June 24,5193() i f mfrwsmas i l m'NnsHiELnfiitiigEiyyAppiicaeamfiiieafpimie 2,519,26. seia1" ne! iiiaieajy My. inventionrelates to improvements'in' Windshield wipers andit consistsin the'com-VV binations, constructions" and arrangements,

hereinafter described `and claimed. 5 An object of my invention"isftoprovide a Windshield wiper inwhich .the squeegee is videa devicejofthetypedescri'bed in which novel means is provided for reversing thedirection of the movemeiitfof vthe squeegeef when the latter reaches itslimit of travel,- thisr reversing of thesqueegee' being 'accom-j f allyrotatesy in the samedirection'.-

Other obj eets and advantages; willvr 'appear plished.. While thedriving' element continu-- features of the invention willibeparticularly pointedout in the appended claims.

My invention is illustrated-in the accomf panyingy drawing, formingvapart of this application, 'in which-` Y u Figure 1 is a longitudinalsection through the device showingtlie deviceapplied toa windshield, andg Figure2 is a sectionalong the yline 2;2 of

Figurel.4 1 f- 1 In carrying out my invention I Ymake luse ofAaqwindshield withina frame f 'connect'r this motor by suitable wirings-tto a switch'5,preferablymounted on an instruf ment. board 6.'-The'switch is adaptedto connect' the wires 4 to wires .7 which. in turnare in electrical connection with a'source of current not shown. A f

An oppositely threaded vshaft 8 is journailed in a bearing 9 and in'acasing 10. They casing'10 houses bevelledgears 11 which erativelylconnect themotor totheshaft.'

A sleeve 12 is mounted upon the shaft 8 A 4andcarries acam followerfmember 13, the latterbeing conneotedto the sleeve 12 at 14. The member13 is adapted'tobefreceived in the following vspecifica-tion, and the'novel glass 1 Vwhichiis ,mounted i i '..th'eshoulder .31 against whichit abuts; f As To the inside of the frame 2 I secure an electric motor3' of standard constructionY and.

:the groove 15 and will cause the vs leeve12`toA eitiierrthe 'i shaftfj/InI Figure 2.1'. show'howfthel sleevei12ffcarf .i 'l ries atubularmember in'which the solueee gee-18. isremovably secured: .means ofa 'setslot-20, in the `under.sideJo-f aitubularfcasin'g.-

i21wliichlhousestheshaft8: f f

f Springs 22 andf 23,'seelFigure hold! stop` members 2111 and.` 25la,i);ai -'I i'st shoul'- ders A26-aiid`f27f'iirthe shaft 8.VThe.purposefofl this construction willi'be vhereinafterTangerine; i i imembers 28 extend around the endsv of the f casing-21 and are secured bythe screws 29 to the frame 2. The clamping members 28 are J have shownthe cam 13 as just clearing the JoiiivJosiiPHivioiiinEVAJtiJO,` .orj;siiivlos,entrepierna groove 151er thegroove thedescription of'the va?rious parts o f the device, the operation therevof maybe Areadilyunderstood. In Figure 1 AI end ofthe groove 16.V i Further vrotatio'noft-he shaftA 8 causes the .camv 13 tonde ,free of y..

the groove and causes the. sleeve `12 to move vthe stop`24 away from theshoul'der26 and to I-compress the rspring 22. The cam 13 is pivotallysecured tothe sleeve 12 and it will therefore swing into a positionparallel'with vsoonas thejcam 13 comes into a positionto thespring 22lupon the sleeve'12 will cause the' cam member to move into thegroove-15. i

The cam member 13 will no w be moved along windshield. l v

move thesqueegee across the front Vof thefgiz theopposite'end of theshaft 8,.the spring y23 together with the stop member 25 Vwill ,cause .95

the cam member to be receivedin the groove 1 6.. This Vmovement iscontinued'as long as shaft 8 continues to rotate. yThe device is eX-tremely simple in construction and'providesa 4 Simple and yautomaticmeans Vfor moving a u 'Y '1,766,224` ysqueegee. across the 'front yofthe-windshield "forcleaning'the-latter. Y' 5 'Iclaimg-I j Y Y In aydeviceof the character described, jai Q 'Y c '5` casing, Ll shafthaving'ieduced ends and op@ positely threaded'jgroovesl thereon', the*Vreduced endsof saidshaft being rotatably sup-V Y ported fon the casing,`said grooves extending Y thru shoulders formed adjacent said reduced K fma ends sleeve slidabiy mounted on the saidvshaftg'aicam'Ineiriberpivotlly carried bysaid v sleeve and'beingslidable in saidgroooves5 f Y n. meansfor rotating said shaft,thereby cams-fY ingsaid Cerrito ride -freelofone groove, thus .Y 1 15allo'wingrthe camto swing in' @position-pan Vatllelwith theshjoulderfg xcup'fshapedwasher Y oneach reduced-end; a spring for pressing Ythe'washer,againstxtheadj'acent shoulderof *i ,the-shaftysaidfwasherbeing slidableaon the 26 yreducedendg sa-id1;. sf1eeve being `adapted.to

force said` Washeiaway Vfromsaid shoulderV e f 'Y before the cam'reaches the end of thefgroove, .c

so astoalloiizthe freeing of the c ain fromjthe Y Vgrooyeq-the actionofisaid Washer and spring f f forcing:saidJcanrginabutment with saidshoulder: so/that the cano isr forcedl to enter the groove oftheopposite threadrwhen; said groove is` 'rotated'zin alignmlt-therewith,-V A Wherebysaid Sleeve is reciprocfited.l Y 1 Y 30V In testimonywhereof Iiax my signature.

